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(PHP 5, PHP 7, PHP 8)
DOMDocument::createElement — Create new element node
This function creates a new instance of class DOMElement. 此节点出现在文档中,除非是用诸如 DOMNode->appendChild() 等函数来将其插入。
localName
The tag name of the element.
value
The value of the element. By default, an empty element will be created. The value can also be set later with DOMElement::$nodeValue.
The value is used verbatim except that the < and > entity references will escaped. Note that & has to be manually escaped; otherwise it is regarded as starting an entity reference. Also " won't be escaped.
Returns a new instance of class DOMElement or false
if an error occurred.
示例 #1 Creating a new element and inserting it as root
<?php
$dom = new DOMDocument('1.0', 'utf-8');
$element = $dom->createElement('test', 'This is the root element!');
// We insert the new element as root (child of the document)
$dom->appendChild($element);
echo $dom->saveXML();
?>
以上示例会输出:
<?xml version="1.0" encoding="utf-8"?> <test>This is the root element!</test>
示例 #2 Passing text containing an unescaped & as value
<?php
$dom = new DOMDocument('1.0', 'utf-8');
$element = $dom->createElement('foo', 'me & you');
$dom->appendChild($element);
echo $dom->saveXML();
?>
以上示例的输出类似于:
Warning: DOMDocument::createElement(): unterminated entity reference you in /in/BjTCg on line 4 <?xml version="1.0" encoding="utf-8"?> <foo/>
注意:
The
value
will not be escaped. Use DOMDocument::createTextNode() to create a text node with escaping support.